CN201190629Y - Shaft sleeve valve assignment cycloid hydraulic motor - Google Patents
Shaft sleeve valve assignment cycloid hydraulic motor Download PDFInfo
- Publication number
- CN201190629Y CN201190629Y CNU2008200359211U CN200820035921U CN201190629Y CN 201190629 Y CN201190629 Y CN 201190629Y CN U2008200359211 U CNU2008200359211 U CN U2008200359211U CN 200820035921 U CN200820035921 U CN 200820035921U CN 201190629 Y CN201190629 Y CN 201190629Y
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- CN
- China
- Prior art keywords
- axle sleeve
- sleeve valve
- valve
- output shaft
- body shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a shaft housing valve thrust cycloid hydraulic motor, which belongs to the technical field of the hydraulic transmission. One end of the hydraulic motor is provided with a body shell with a feed inlet and a reflux inlet, and the other end is a cycloid needle wheel pair composed of a stator and a rotor; one end of the body shell is provided with an output shaft of which the external end extends out, the middle of the body shell is provided with a universal driving shaft of which two ends are respectively meshed with the internal end of the output shaft and the internal spline of the rotor; the internal end of the output shaft is fixedly connected with a shaft housing valve sleeved on the external circle of the output shaft, the external circle of the shaft housing valve is provided with a thrust structure, and the shaft housing valve can be rotationally installed in the inner hole of the body shell. The utility model has compact structure, can bear a large radial force, can bear a certain axial force, and is quite convenient for processing and assembly.
Description
Technical field
The utility model relates to a kind ofly realizes that by cycloid pin gear group engagement pair hydraulic pressure can be to the cycloid hydraulic motor of mechanical energy conversion, and especially a kind of axle sleeve valve distributing cycloid hydraulic motor belongs to hydraulic transmission technology field.
Background technique
Cycloid hydraulic motor is a fluid pressure drive device commonly used, also is to realize that hydraulic pressure can convert the hydraulic pressure execution device commonly used of function to.Cycloid hydraulic motor has advantages such as volume is little, specific power density is big, efficient is high, speed range is wide, thereby has obtained extensive use.
The basic structure of this type of device is to be shaped on liquid entering hole and refluxing opening on body shell or the bonnet, one end is equipped with cycloidal pinion engaged pair and flow-distribution mechanism, flow-distribution mechanism can be placed on before or after the cycloidal pinion engaged pair, be axle valve flow generally in preceding (body shell one side), in back (bonnet one side) is the plane flow, and the other end is equipped with output shaft.The rotor of cycloidal pinion engaged pair is by the external gear engagement of internal spline and couple axle one end, and the other end of couple axle is connected with the output shaft transmission.During work, flow-distribution mechanism makes liquid entering hole be communicated with the expansion engagement chamber of cycloidal-pin wheel pair, and the contraction chamber of cycloidal-pin wheel pair is communicated with refluxing opening.As a result, after pressured fluid enters body shell or bonnet from liquid entering hole, enter the expansion engagement chamber that cycloidal pinion engaged pair forms, its volume is constantly enlarged, liquid then refluxes from refluxing opening in the contraction engagement chamber of cycloidal pinion engaged pair formation simultaneously; In this process, the rotor of cycloidal pinion engaged pair is expanded the engagement chamber and orders about rotation with the pressure difference of shrinking the engagement chamber, and this rotation is delivered to output shaft output by couple axle, thereby realizes that hydraulic pressure can be to the conversion of mechanical energy.Meanwhile, also by the couple axle driven rotary, the continuous switching connected state that goes round and begins again is continued transfer process to flow-distribution mechanism (axle valve).Like this, the output torque that motor just can be continuous.
Retrieval is found, the cycloid hydraulic motor of existing axle flow develops towards the direction of compact structure, but because its structural limitations, the ability of bearing big radial force can not get fine improvement, even set up needle bearing, can make all improvement of radial force ability to bear, but because its structural limitations, its needle roller is less, load is very limited, and can cause the raising of the accuracy of manufacturing of Motor Components, installation precision requires higher, even may cause such as other problems such as shortenings in working life.
The model utility content
The purpose of this utility model is: at the problem of above prior art existence, propose a kind of compact structure, can bear the axle sleeve valve distributing cycloid hydraulic motor of big radial force, and reduce the complex structure degree, make the manufacturability of processing, assembling of oil hydraulic motor all good, improve its cost performance.
In order to achieve the above object, the claimant is by the structural analysis to discharge capacity 200-630 milliliter/medium discharge capacity cycloid hydraulic motor bigger than normal of commentaries on classics, especially have a valve distributing construction research of the cycloid tooth wheel set oil hydraulic motor integral structure layout of pin tooth is arranged, find out the weak link of its bearing radial force, keeping under the constant prerequisite of overall dimensions, proposing following the technical solution of the utility model is: a kind of axle sleeve valve distributing cycloid hydraulic motor, one end is the body shell that is shaped on liquid entering hole and refluxing opening, the cycloidal-pin wheel pair of the other end for mainly being made of stator and rotor; Described body shell one end is equipped with the output shaft that the outer end extends out, the middle part be equipped with two ends respectively with the couple axle of described output shaft the inner and rotor internal spline engagement; Its improvements are: fixedly connected with the axle sleeve valve that is enclosed within its cylindrical in the inner of described output shaft, and described axle sleeve valve cylindrical is shaped on distributing construction, and described axle sleeve valve is rotatable to be installed in the endoporus of body shell.
Above technological scheme is further improved: described output shaft is supported on the output terminal of described body shell by a pair of radial ball bearing, and an end of described axle sleeve valve is fixedlyed connected with output shaft through connecting pin radially.
Like this, high, low-pressure hydraulic fluid is by the flow of flow on the axle sleeve valve, oil through road through the body shell, be communicated with the cavity volume between rotor and the stator, make commentaries on classics, the height of cavity volume between the stator, the conversion of low pressure fluid, the moment of torsion that forms, pass through rotor, couple axle is delivered to output shaft, and make axle sleeve valve and the joining structure of output shaft by connecting pin radially, not only help to make the distributing construction compactness, and flow-distribution mechanism and moment of torsion output mechanism nonintegrated structure, therefore can output shaft be supported in the output terminal of described body shell by a pair of radial ball bearing, thereby can bear big radial force very easily at output shaft end design bearing mounting structure, simultaneously also can bear certain axial force, and processing, assemble all very convenient.
Compare with gerotor motor in the past, above-mentioned improvement structure of the present utility model can enlarge the application area of motor, and especially axle flow motor develops to big discharge capacity direction, and its structure helps reducing the extra feel trim actuator of client, saves cost.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is an embodiment's of the utility model a structural representation.
Output shaft 1 among the figure, dust ring 2, protecgulum 3, body shell 4, spacer ring 5, bearing 6, connecting pin 7, hydraulic fluid port 8, elastomer 9, valve ball 10, valve body 11, seal ring 12, stator 13, rotor 14, pin tooth 15, pad 16, plug screw 17, bolt 18, pad 19, bonnet 20 is every dish 21, O type circle 22, axle sleeve valve 23, couple axle 24, cannelure 25, circular groove 26, cavity 27, back-up ring 28, protecgulum seal ring 29, screw 30, axle envelope 31.
Fig. 2 is the structure for amplifying schematic representation of one-way valve among Fig. 1 embodiment.
Embodiment
The axle sleeve valve distributing cycloid hydraulic motor of present embodiment can bear big radial force, and discharge capacity is bigger, basic structure as shown in Figure 1, mainly comprise output shaft 1, protecgulum 3, body shell 4, couple axle 24, every dish 21, change stator pin tooth pair 14,13 and 15, bonnet 20 etc.Engagement cycloidal pinion engaged pair in its transfer, stator pin tooth are formed, stator 13 be fixed on jointly on the body shell 4 by bolt 18 every dish 21 and bonnet 20, thereby form seven only cavitys of communicating one by one of the flow duct in the consubstantiality shell.
Be shaped on distributing construction on the axle sleeve valve 23, therefore have the flow function, processed cannelure 25 and two circular grooves 26 of 12 uniform dislocation on this device, wherein two circular grooves match with the flow duct of body shell 4, communicate respectively with into and out of hydraulic fluid port.12 cannelures on the axle sleeve valve 23 link to each other with one of two circular grooves respectively.Processed on the body shell 4 duct with high low pressure fluid and the flow duct, communicate respectively with into and out of hydraulic fluid port thereby 12 cannelure is alternate, with the axle sleeve valve 23 common flow functions that realize keeping the oil hydraulic motor continuous running, thus, axle sleeve valve 23 has been formed flow-distribution mechanism with body shell 4.
Output shaft 1 is installed by a pair of radial ball bearing 6 and is supported in the output terminal of body shell 4, thereby structure can be born big radial force, also can bear certain axial force simultaneously, and processes, assembles all very convenient.
The described flow system intergration is an axle sleeve valve 23 on the axle sleeve valve, and described axle sleeve valve 23 is rotatable to be installed in the endoporus of body shell 4; One end of described axle sleeve valve links through connecting pin and output shaft 1, carries out the gap drive fit, described connecting pin 7 radial arrangement, connecting pin radial position and axle sleeve valve arrange and the spline engagement position of output shaft and couple axle has phase relationship.In order to guarantee axle sleeve valve 23 and the phase relationship of changeing stator pin tooth pair 14,13 and 15, promptly internal spline and the couple axle 24 by output shaft 1 transmits, and the end of connecting pin 7 has an elastic support, to guarantee effectively keeping of phase relationship.
In addition, axle sleeve valve 23 and the end that output shaft 1 gap is closely connected have decompressing groove, prevent build-up of pressure, and described decompressing groove is a spirality, perhaps annular.
Be shaped on the drainback passage that is communicated with internal cavity 26 on the body shell 4 of present embodiment, in this passage one-way valve be housed, it amplifies schematic construction as shown in Figure 3, is made up of elastomer 9, valve ball 10, valve body 11, seal ring 12.11 one-tenth steps of valve body are poroid, are installed in the body shell 4 by seal ring 12.In the big end of step hole valve ball 10 is housed, the outside of this valve ball is resisted against on the elastomer 9.Because interior engagement cycloidal pinion engaged pair is under the driving of high low pressure hydraulic oil, when producing moment of torsion, need certain clearance for guaranteeing to rotate flexibly between its each revolute pair, have a spot of oil liquid leakage unavoidably and enter cavity 26, and then get back in system's fuel tank by one-way valve.
Facts have proved that the Coefficient of discharge of the axle sleeve valve distributing cycloid hydraulic motor of present embodiment is bigger, motor displacement is also bigger, the parts machining process moderate accuracy, the good manufacturability of assembling, reliability height, and compact structure can bear big radial force, thereby improve cost performance of product.
Claims (7)
1. axle sleeve valve distributing cycloid hydraulic motor, an end is the body shell that is shaped on liquid entering hole and refluxing opening, the cycloidal-pin wheel pair of the other end for mainly being made of stator and rotor; Described body shell one end is equipped with the output shaft that the outer end extends out, the middle part be equipped with two ends respectively with the couple axle of described output shaft the inner and rotor internal spline engagement; It is characterized in that: fixedly connected with the axle sleeve valve that is enclosed within its cylindrical in the inner of described output shaft, and described axle sleeve valve cylindrical is shaped on distributing construction, and described axle sleeve valve is rotatable to be installed in the endoporus of body shell.
2. according to the described axle sleeve valve of claim 1 distributing cycloid hydraulic motor, it is characterized in that: described output shaft is supported on the output terminal of described body shell by a pair of radial ball bearing, and an end of described axle sleeve valve is fixedlyed connected with output shaft through connecting pin radially.
3. according to the described axle sleeve valve of claim 2 distributing cycloid hydraulic motor, it is characterized in that: the end that described axle sleeve valve and output shaft are connected has decompressing groove.
4. according to the described axle sleeve valve of claim 3 distributing cycloid hydraulic motor, it is characterized in that: described decompressing groove is a spirality.
5. according to the described axle sleeve valve of claim 3 distributing cycloid hydraulic motor, it is characterized in that: described decompressing groove is annular.
6. according to claim 4 or 5 described axle sleeve valve distributing cycloid hydraulic motors, it is characterized in that: be shaped on the drainback passage that is communicated with internal cavity on the described body shell, in the described drainback passage one-way valve be housed.
7. according to the described axle sleeve valve of claim 6 distributing cycloid hydraulic motor, it is characterized in that: described one-way valve is made up of elastomer, valve ball, valve body, and described valve body becomes step poroid, is installed in the body shell, in the big end of described step hole valve ball is housed, the outside of described valve ball is resisted against on the elastomer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200359211U CN201190629Y (en) | 2008-05-20 | 2008-05-20 | Shaft sleeve valve assignment cycloid hydraulic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200359211U CN201190629Y (en) | 2008-05-20 | 2008-05-20 | Shaft sleeve valve assignment cycloid hydraulic motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201190629Y true CN201190629Y (en) | 2009-02-04 |
Family
ID=40334789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200359211U Expired - Fee Related CN201190629Y (en) | 2008-05-20 | 2008-05-20 | Shaft sleeve valve assignment cycloid hydraulic motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201190629Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797622A (en) * | 2012-09-07 | 2012-11-28 | 镇江大力液压马达有限责任公司 | Cycloid hydraulic motor of shaft-valve flow-distribution type |
| CN104533703A (en) * | 2014-11-28 | 2015-04-22 | 宁波中意液压马达有限公司 | Cycloid hydraulic motor with brake |
| CN106837681A (en) * | 2017-03-20 | 2017-06-13 | 镇江大力液压马达股份有限公司 | A kind of body shell positions radial support axle valve flow distribution cycloid hydraulic motor |
-
2008
- 2008-05-20 CN CNU2008200359211U patent/CN201190629Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797622A (en) * | 2012-09-07 | 2012-11-28 | 镇江大力液压马达有限责任公司 | Cycloid hydraulic motor of shaft-valve flow-distribution type |
| CN104533703A (en) * | 2014-11-28 | 2015-04-22 | 宁波中意液压马达有限公司 | Cycloid hydraulic motor with brake |
| CN106837681A (en) * | 2017-03-20 | 2017-06-13 | 镇江大力液压马达股份有限公司 | A kind of body shell positions radial support axle valve flow distribution cycloid hydraulic motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090204 Termination date: 20160520 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |